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十、E组用油的分类 1.E组用油的分类 在ISO尚未发表E组用油分类情况下,我国发布了E组(内燃机)用油的分类(GB/T7631.3—89)。该分类采用了SAE J183—84中划分品种的原则,但未
X. Classification of oil used in group E 1. Classification of oil used in group E In the case of the classification of oil used in group E already not published by ISO, China has released the classification of oil in group E (internal combustion engine) (GB / T7631.3-89). This classification uses the principle of classification in SAE J183-84, but not